Former Wimbledon champion Goran Ivanisevic says his serve is now so weak that he would struggle to beat the Williams sisters.

On Wednesday the 32-year-old lost in a first round doubles match in a Zagreb challenger tournament when he was playing with a 15-year-old fellow Croat. Instead of cursing and smashing rackets -- the trademark of his 13-year career -- the 2001 Wimbledon champion explained that time and injury had taken their toll on his once feared serve.

"My serve is not as good as it used to be. Other guys hit much harder... Now I am ideal for women's tennis.

"Serena, Venus and me -- what a fight that would be," he was quoted as saying in the daily Jutarnji List on Thursday. Ivanisevic still dreams of playing one more time at the All England Club. However, his injured left arm is becoming increasingly troublesome, making him wonder if he should just rest before this year's Wimbledon tournament.

"If only I could know my opponent (at the French Open). I would certainly agree to play (Andre) Agassi, but who could be bothered if they draw me against an unknown?

"Then again, perhaps Roland Garros would show the condition of my arm. I am not sure if it would last for five sets."

Ivanisevic's ranking has dropped to below 400 and he relies on wild cards to get into top events.